<template>
    <div class="list" ref="wrapper">
        <div>
        <div class="area">
            <div class="title border-topbottom">当前城市</div>
            <div class="button-list">
                <div class="button-wrapper">
                    <div class="button">
                        {{this.city}}
                    </div>
                </div>
            </div>
        </div>

        <div class="area">
            <div class="title border-topbottom">热门城市</div>
            <div class="button-list">
                <div class="button-wrapper" v-for="item of hot" :key="item.id" @click="handleCityClick(item.name)">
                    <div class="button">{{item.name}}</div>
                </div>
            </div>
        </div>

        <div class="area" v-for="(item, key) of cities" :key="key" :ref="key">
            <div class="title border-topbottom">{{key}}</div>
            <div class="item-list">
                <div class="item border-bottom"
                     v-for="innerItem of item" :key="innerItem.id" @click="handleCityClick(innerItem.name)">
                     {{innerItem.name}}
                </div>
            </div>
        </div>


        </div>
    </div>
</template>

<script>
import BScroll from 'better-scroll'
import {mapState, mapMutations} from 'vuex'
export default {
    name: 'CityList',
    props: {
        hot: Array,
        cities: Object,
        letter: String
    },
    computed: {
        ...mapState(['city'])
    },
    mounted() {
        this.scroll = new BScroll(this.$refs.wrapper)
        // 必须是dom元素
    },
    watch: {
        letter() {
            if (this.letter) {
                const element = this.$refs[this.letter][0]
                this.scroll.scrollToElement(element)
            }
        }
    },
    methods: {
        handleCityClick(city) {
            // this.$store.commit('changeCity', city)
            this.changeCity(city)
            this.$router.push('/')
        },
        ...mapMutations(['changeCity'])
    }

}
</script>


<style lang="stylus" scoped>
    .border-topbottom
        &:before
            border-color: #ccc
        &:after
            border-color: #ccc
    .border-bottom
    &:before
        border-color: #ccc
    .list
        overflow hidden
        position absolute
        top 1.58rem
        left 0
        right 0
        bottom 0

        .title
            line-height: .54rem
            background-color: #eee
            padding-left: .2rem
            color: #666
            font-size: .26rem
        .button-list
            overflow: hidden
            padding: .1rem .6rem .1rem .1rem
            .button-wrapper
                width: 33.33%
                float: left
                .button
                    padding: .1rem 0
                    text-align: center
                    margin: .1rem
                    border:.02rem solid #ccc
                    border-radius: .06rem
        .item-list
            .item
                line-height: .76rem
                padding-left: .2rem


</style>